#!/usr/bin/env node

const {EventEmitter} =require('events');

const evt = new EventEmitter();

evt.on('hello',()=>console.log('hello evt'));
evt.on('bye',()=>{
    console.log('good bye');
    process.exit();
});

setInterval(()=>{
    evt.emit('hello');
},1000
);

setTimeout(()=>{
    evt.emit('bye');
},5000)